Six tiers. One ledger. No promotion without proof.
Most platforms in the international-student space sell L0 dressed as L4. Albi never does. Every entry on a public Evidence Portfolio has its tier visible, the artifact linked, and the reviewer named.
Why six tiers and not three
Three tiers (self / verified / public) collapse the place where students get hurt: the gap between “an artifact exists” and “an independent reader can use it.” That gap is where ghostwritten essays live, where padded resumes live, where unverified internships live. Six tiers force us to name the gap explicitly.
The shape mirrors what an admissions committee or PI actually does: read everything as L0 until they can find something at L3+ to anchor their judgement. We make that the visible floor, not the hidden one.
The tier table
How promotion happens
Promotion is event-driven, not time-driven. A piece of work moves up a tier when a new fact becomes true:
- L0 → L1 — an artifact is committed.
- L1 → L2 — an internal reviewer signs off.
- L2 → L3 — the artifact gets a publicly addressable handle (commit hash, DOI, URL).
- L3 → L4 — a downstream project depends on the artifact in production.
- L4 → L5 — a sustained L3+ record exists with named, blinded reviewers and at least one independent L4 use.
A demotion can also happen — if an artifact disappears, becomes unverifiable, or is withdrawn by the student under Charter §5 consent revocation.
Payment firewall (Charter §3.16)
Payment buys structure, supervision, and access to coaching slots. It does not buy a higher tier. The reviewer is blinded to:
- Whether the student is on a paid plan.
- Which tier they are on.
- Whether their renewal is upcoming.
If the system-wide decline rate falls below 30%, an external audit (m562) fires the next monthly cycle. That floor is the protection against payment-induced inflation.
The evidence packet
When a student is at L5, Albi prepares an evidence packet — not a recommendation. An independent scholar reviews the packet and decides, on their own authority, whether to write a recommendation letter. Albi never sells, packages, or promises recommendations.
What an evidence packet contains:
- The append-only contribution ledger, time-stamped.
- Each artifact at L3+, with the public address.
- The named reviewers, with their decline-rate history and conflicts of interest.
- The redline grep history — i.e., a public record that the work itself never tripped a Charter forbidden phrase.
What an evidence packet does not contain:
- Ghostwritten essays.
- Outcome guarantees.
- Anything paid-for that pretends to be earned.